#include<stdio.h>
int main()
{
	int year,leap;
	printf("enter year:");
	scanf("%d",&year);
	if(year%4==0)
	   {if(year%100==0)
	   if(year%400==0)
	   leap=1;
	   else
	   leap=0;}
	   else
	   leap=0;
	   if(leap)
	   printf("%d is",year);
	   else
	   printf("%d is not",year);
	   printf(" a leap year\n");
	   return 0;
	   
	    
       }
   
